ossldossl/jsoncanvas

Generator for the Json-Canvas format in C

jsonCanvas

jsonCanvas is an implementation of the JSONCanvas Spec in C.

This library does ONLY provide the ability to create JSONCanvas files, and not to render them!

Usage

This library is in the style of the great stb-headers which means you just have to include the header file in your project and you're done.

NOTE: By default, jsoncanvas.h acts as a normal header file. When defining the JSONCANVAS_IMPLEMENTATION macro in ONLY ONE source file, it pastes the implementation (what in this case would be "jsoncanvas.c") into the C-File it is included in. INCLUDING jsoncanvas.h WITH THE MACRO IN MORE THAN ONE FILE LEADS TO ODR-VIOLATIONS

#define JSONCANVAS_IMPLEMENTATION // only define in *one* file
#include "jsoncanvas.h" // include everywhere you want
...

See example.c for an example.

Api

bool jcanvas_init(jcanvas* result);
jcanvas_node* jcanvas_text_node_s(jcanvas* c, str id, str content);
jcanvas_node* jcanvas_text_node(jcanvas* c, char* id, char* content);
jcanvas_node* jcanvas_file_node_s(jcanvas* c, str id, str content);
jcanvas_node* jcanvas_file_node(jcanvas* c, char* id, char* content);
jcanvas_node* jcanvas_link_node_s(jcanvas* c, str id, str link);
jcanvas_node* jcanvas_link_node(jcanvas* c, char* id, char* link);
jcanvas_node* jcanvas_group_node_s(jcanvas* c, str id);
jcanvas_node* jcanvas_group_node(jcanvas* c, char* id);
void jcanvas_set_label_s(jcanvas_node* node, str label);
void jcanvas_set_label(jcanvas_node* node, char* label);
void jcanvas_set_background_image_s(jcanvas_node* node, str path);
void jcanvas_set_background_image(jcanvas_node* node, char* path);
void jcanvas_set_background_style(jcanvas_node* node, jcanvas_background_style style);
jcanvas_edge* jcanvas_connect(jcanvas* c, jcanvas_node* a, jcanvas_node* b);
void jcanvas_pos_node(jcanvas_node* node, int64_t x, int64_t y, int64_t width, int64_t height);
str jcanvas_generate(jcanvas* c);
void jcanvas_destroy(jcanvas* c);

Making changes

For comfort purposes, the actual development happens in src/_jsoncanvas.c and src/_jsoncanvas.h. Change those files for changes and generate the single-header file by running the generate_header.py script.
The default allocator can be changed by defining the ALLOCATE and FREE macros.